background image

 

OPERATION AND MAINTENANCE MANUAL

 

08-2015 

 

3

 

1 TECHNICAL DESCRIPTION 
 
1.1 PRODUCT NAME AND FEATURES 

 

The  subject  of  this  instruction  manual  are  flange  strainers  for  water  systems.  Their  feature  is  the 

capability to capture all particles larger than 1.25-1.5 mm.  

 
 

1.2 PURPOSE 
 

Flange strainers are designed to remove contamination from the pipeline during its operation. They are 

used  in  drinking  water  or  industrial  systems.  They  may  be  used  in  above-ground  systems,  necessarily  at 
easily accessible points in essentially horizontal pipelines. Installation is possible in vertical systems and 
diagonally, but only when downward direction of medium flow is maintained
. 

 
 
1.3 TECHNICAL SPECIFICATION 

 

Flange  strainers  Type  7110  are  designed  to  protect  drinking  and  technological  water  and  other  liquid 

systems (consult the manufacturer): 

 

- temperature: 

-10

°

C – +70

°

C (120

°

C). 

- range of diameters (dimensions) used:  

- DN 50-300 [mm]; 

- max medium flow rate: 

- liquid: 4[m/s]; 

- nominal pressure: 

- PN: - 1.6 MPa; 

- operating pressure range:  

- 0.02-1.6 MPa; 

- filtering parameters: 

aperture size: 

1.25 mm (ca. 27 meshes/cm

2

) for DN 50-80 

1.5 mm (ca. 23 meshes/cm

2

) for DN 100-300 

 

 

connection flanges are manufactured in accordance with PN-EN 1092-2: 1999 

 

face-to-face length and its tolerances are in accordance with PN-EN 558-1  

series 48  

 

the selection of strainers Type 7110 depends on the levels of contamination present in the pipeline.  

 
 

2 STRUCTURE 

 

2.1 FITTING STRUCTURE DESCRIPTION 

 

F.A.  JAFAR  S.A.  manufactures  cast  iron  flange  strainers  Type  7110  for  drinking  and  technological 

water  systems.  They  feature  cast  iron  body  with  stainless  steel  mesh  insert  (perforated  sheet)  with  the 
aperture size of 1.25-1.5 mm. The whole is equipped with a drain plug in the lower part, which allows easy 
disassembly during the removal of contamination in the pipeline. The position of the filter allows capturing 
contamination during unrestricted flow of the medium. 

The  strainer  insert  chamber  is  fitted  with  a  cast  iron  cover  sealed  with  a  rubber  sealing  O-ring  or 

graphite on a steel ring and bolted to the body using hex screws. All internal and internal cast iron surfaces 
of the strainer are covered with powder epoxy paint. 

 

It  is  recommended  to  install  the  strainer  horizontally  at  the  lowest  point  of  the  pipeline  or  at 

bending points. 

 

 

2.2 MATERIALS 

 

The list of materials used for strainer Type 7110 manufacturing is given in the following tables. 

 

Summary of Contents for 7110

Page 1: ...for use by President of Factory JAFAR S A User s failure to follow the instructions and guidelines included in this operation and maintenance manual exempts the manufacturer of all obligations and war...

Page 2: ...SCRIPTION 3 2 2 MATERIALS 3 2 3 DIMENSIONS 5 2 4 STANDARDS 6 2 5 ORDERING PRINCIPLES 6 2 6 MANUFACTURE AND ACCEPTANCE 7 2 7 MARKING 7 3 PROTECTION STORAGE TRANSPORTATION 7 3 1 PROTECTIVE COATINGS 7 3...

Page 3: ...meshes cm2 for DN 100 300 connection flanges are manufactured in accordance with PN EN 1092 2 1999 face to face length and its tolerances are in accordance with PN EN 558 1 series 48 the selection of...

Page 4: ...Drain plug Malleable cast irons EN GJMB 300 6 PN EN 1562 2012 Grey cast iron EN GJL 250 PN EN 1561 2012 Screw 1 4 2 Graphite CrNiSt 5 Body PN EN ISO 4016 2011 Grey cast iron EN GJL 250 PN EN 1561 201...

Page 5: ...10 0 65 1 0 1 6 290 310 185 122 145 1 14 0 80 1 0 1 6 310 370 200 138 160 19x4 8 1 19 0 100 1 0 1 6 350 440 220 158 180 1 28 7 125 1 0 1 6 400 540 250 188 210 5 4 45 0 150 1 0 1 6 480 560 285 212 240...

Page 6: ...eel Grades PN EN 1982 2010 Copper and copper alloys Ingots and castings PN EN 12420 2002 Copper and copper alloys Forgings PN ISO 965 1 2001 General purpose ISO metric threads Tolerances Principles an...

Page 7: ...the documentation with the following data company name and mark product serial number sealing temperature rating construction mark B and or mark CE as applicable product type 3 PROTECTION STORAGE TRA...

Page 8: ...allation one should ensure that the system does not expose the fittings strainer to bending or tension stress caused by encumbrance with the mass of an unsupported pipeline It is recommended to perfor...

Page 9: ...should be operated according to the requirements for fittings positioned as recommended by the manufacturer In order to ensure full operational functionality it is recommended to rinse the strainers w...

Reviews: